Drop support for Haskell glyphs

I think that glyphs look nice, but they subtley confuse Emacs's UI. In the case
of a two-character glyph condensing into one character's width, the fill-width
indicator -- correctly -- highlights the 81st character as red, but it looks
like it's erroneously highlighting the 80th.

Also when I want to create an anonymous function I type (), which condenses into
the unit character, and it's difficult to delete either the opening or the
closing parenthesis.

Overall I think glyphs are cute, but they're not worth the trouble.

emacs/.emacs.d/wpc/wpc-haskell.el

@@ -11,11 +11,6 @@
 ;; font-locking, glyph support, etc
 (use-package haskell-mode
   :config
-  (let ((m-symbols
-         '(("`mappend`" . "⊕")
-           ("<>"        . "⊕"))))
-    (dolist (item m-symbols) (add-to-list 'haskell-font-lock-symbols-alist item)))
-  (setq haskell-font-lock-symbols t)
   (add-hook-before-save 'haskell-mode #'haskell-align-imports))
 
 ;; LSP support